// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_TREES_EFFECT_NODE_H_
#define CC_TREES_EFFECT_NODE_H_

#include "cc/base/cc_export.h"
#include "cc/output/filter_operations.h"
#include "third_party/skia/include/core/SkBlendMode.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/size_f.h"

namespace base {
namespace trace_event {
    class TracedValue;
} // namespace trace_event
} // namespace base

namespace cc {

class RenderSurfaceImpl;

struct CC_EXPORT EffectNode {
    EffectNode();
    EffectNode(const EffectNode& other);

    // The node index of this node in the effect tree node vector.
    int id;
    // The node index of the parent node in the effect tree node vector.
    int parent_id;
    // The layer id of the layer that owns this node.
    int owning_layer_id;

    float opacity;
    float screen_space_opacity;

    FilterOperations filters;
    FilterOperations background_filters;
    gfx::PointF filters_origin;

    SkBlendMode blend_mode;

    gfx::Vector2dF surface_contents_scale;

    gfx::Size unscaled_mask_target_size;

    bool has_render_surface;
    RenderSurfaceImpl* render_surface;
    // Only applicable if has render surface. A true value means a clip needs to
    // be applied to the output of the surface when it is drawn onto its parent
    // surface.
    // TODO(crbug.com/504464): There is ongoing work to delay render surface
    // decision to later phase of the pipeline. This flag shall be removed and
    // computed during render surface decision.
    bool surface_is_clipped;
    bool has_copy_request;
    bool hidden_by_backface_visibility;
    bool double_sided;
    bool is_drawn;
    // TODO(jaydasika) : Delete this after implementation of
    // SetHideLayerAndSubtree is cleaned up. (crbug.com/595843)
    bool subtree_hidden;
    bool has_potential_filter_animation;
    bool has_potential_opacity_animation;
    bool is_currently_animating_filter;
    bool is_currently_animating_opacity;
    // We need to track changes to effects on the compositor to compute damage
    // rect.
    bool effect_changed;
    int num_copy_requests_in_subtree;
    bool has_unclipped_descendants;
    int transform_id;
    int clip_id;
    // Effect node id of which this effect contributes to.
    int target_id;
    int mask_layer_id;

    bool operator==(const EffectNode& other) const;

    void AsValueInto(base::trace_event::TracedValue* value) const;
};

} // namespace cc

#endif // CC_TREES_EFFECT_NODE_H_
